How you submit a self-billing invoice depends on your role:

Include the text "Invoice issued by customer" on the PDF invoice. This is a legal requirement for self-billing invoices.

Note: if you send a self-billing invoice to the wrong email address (purchase instead of sales, or vice versa), the conversion task will be rejected.

Self-billing invoices submitted as sales invoices end up in your Outbox. Your accounting software or ERP system must be able to read sales invoices from the Outbox via the connection. Not all software packages support this. Check with your software supplier in advance whether importing sales invoices is supported.

After submission, the IDR processes the self-billing invoice in the same way as a regular invoice. The supplier is identified, the amounts are recognised and the invoice is converted to a validated e-invoice.

The difference lies in the destination: the invoice ends up in your Inbox (as a purchase invoice) or in your Outbox (as a sales invoice), depending on the email address you sent it to.

Note: self-billing has no effect on whether an amount is processed as debit or credit. Whether something is debit or credit does not follow from the self-billing nature of the document; self-billing only determines who draws up the invoice and through which channel (purchase or sales) it is submitted.

If you regularly receive self-billing invoices from the same party, you can set up a trusted sender with the correct document type (purchase invoice or sales invoice). This ensures the invoices are automatically processed through the correct channel.